Description

The largest proportional energy step in the 30×48mm format — 70.3% more energy than the 500mAh for just 9g and 2.8mm more. The 3.7V Ternary 850mAh delivers 110A peak and 51A continuous from a 26g, 7.6mm soft pack in the 30×48mm footprint — the mid-capacity cell that delivers the most energy-efficient upgrade in the entire 30×48mm family. Built for mid-size micro FPV racing drones, compact RC cars, RC aircraft, and RC boats where the 500mAh’s 65A peak ceiling is insufficient and minimum additional weight is the priority.

 

Key Specifications at a Glance

Why Choose the Midlands Power 850mAh Ultra Ternary Battery?

70.3% More Energy Than the 500mAh — The Largest Proportional Step in the 30×48mm Format

Stepping from the 500mAh to the 850mAh adds 1.30Wh of stored energy (+70.3%) and raises peak current from 65A to 110A (+69.2%) — the largest proportional energy gain of any step in the 30×48mm family, and one of the most favourable trades in the entire Ultra lineup. All three steps in the format compared:

No other adjacent step within the 30×48mm family delivers a proportional energy gain this large for this weight addition. For any build currently running the 500mAh where more run time or higher peak current is the primary objective, the 850mAh is the most energy-efficient upgrade available in this format.

 

110A Peak at 130C — Same Absolute Current as the 20×122mm 1,000mAh at a Higher C-Rating

Advanced electrode material formulation and the 30×48mm wide-format geometry deliver 110A of instantaneous peak burst current at 130C — the same absolute peak output as the 20×122mm 1,000mAh (110C / 110A), but from a 130C-rated cell with more C-rating headroom above the 110A threshold:

At 130C versus 110C, the 850mAh reaches the same 110A absolute output with proportionally more C-rating headroom above its rated ceiling. The choice between them is entirely a question of bay geometry — not a performance hierarchy.

 

51A Continuous — 21A More Than the 500mAh

At 60C continuous from 850mAh, this cell delivers 51A of sustained output — 21A more than the 500mAh’s 30A. For motor setups that sustain consistently high current draws during cruise and racing conditions rather than relying solely on peak bursts, the 51A continuous rating provides meaningfully stronger sustained power delivery throughout the full racing run.

 

The Only 30×48mm Cell Between 4.8mm and 9.6mm Depth

At 7.6mm, the 850mAh is the sole cell in the 30×48mm format fitting bays too deep for the 500mAh (4.8mm) to be the constraint but too shallow for the 1,100mAh (9.6mm). For depth-constrained builds where bay depth is available up to 7.6mm but not 9.6mm, the 850mAh is the only option in this footprint. There is no alternative at this depth in the 30×48mm family.

 

Mid-Cell for Balanced Weight and Performance

At 26g, the 850mAh sits precisely between the 500mAh (17g) and the 1,100mAh (33g) — the balanced choice for builds where the 17g minimum of the 500mAh is achievable in the bay but its 65A peak is insufficient, and where the 1,100mAh’s 33g and 9.6mm represent more weight and thickness than the platform’s budget allows. For micro builds where the weight window falls between 17g and 33g and the current requirement is between 65A and 143A peak, the 850mAh is the precise fit.

 

Ceramic Separator and PVDF Electrode — Racing-Grade Construction

Industry-first ceramic separator and PVDF electrode construction deliver thermal resistance and structural integrity at the demanding output levels of competitive racing. The ceramic separator maintains safety under 110A peak events at the 30×48mm electrode area. The PVDF binder sustains electrode structural integrity through the mechanical and electrochemical stress of sustained high-rate cycling, contributing to long cycle life and consistent performance across hundreds of charge-discharge cycles in demanding racing environments.

 

Full 30×48mm Format Comparison

Cross-Format Comparison — Similar Capacity, Different Geometry

When the 850mAh Is the Right Choice

The 850mAh is the correct cell within the 30×48mm format when three conditions apply.

The 500mAh is insufficient — its 65A peak or 30A continuous does not meet the motor and ESC configuration’s requirements.

The 1,100mAh is too much — its 33g and 9.6mm exceed the platform’s weight or depth budget, or bay depth is available to 7.6mm but not 9.6mm.

Maximum energy-per-gram upgrade is the priority — at +70.3% energy for just +9g, no other step in the 30×48mm format comes close to this proportional gain.

 

Stepping Up From the 500mAh

Moving from the 500mAh to the 850mAh in the same 30×48mm bay adds 1.30Wh of stored energy (+70.3%), raises peak burst from 65A to 110A (+45A), and raises continuous from 30A to 51A (+21A) — for 9g of additional weight and 2.8mm of additional thickness. No frame modification is required. This is the most energy-efficient upgrade available within the 30×48mm format from a single capacity step.

 

Charging: 2C / 1.7A — Full Charge in ~30 Minutes

The 2C continuous charge rate delivers 1.7A input, fully charging the cell in approximately 30 minutes. Running multiple cells in rotation at 2C sustains back-to-back racing sessions at the mid-range energy level of the 30×48mm format without interruption.

 

Ideal Applications

Mid-size micro FPV racing drones — 130C / 110A peak in 26g, the 130C rate tier with the best proportional energy step in the 30×48mm format.

Compact RC cars with short wide bays — 70.3% more energy than the 500mAh in the same 30×48mm footprint for motor setups exceeding 65A peak.

RC aircraft with compact wide bays — 7.6mm profile and 26g in the 30×48mm format for compact fuselage bays where depth up to 7.6mm is available.

RC boats with short hull compartments — 51A continuous, 21A more than the 500mAh, for higher sustained motor loads in the same compact hull geometry.

500mAh upgrade builds — same 30×48mm bay, 70.3% more energy, 69.2% more peak current, for just 9g and 2.8mm more.

Builds requiring 110A peak in the 30×48mm bay — the only 30×48mm cell delivering 110A peak at 130C, for motor and ESC combinations exceeding the 500mAh’s 65A ceiling.

 

Product Summary

The Midlands Power 3.7V Ternary 850mAh occupies the mid-capacity position of the 30×48mm format with a clear purpose: the most energy-efficient upgrade in the family, delivering 70.3% more energy than the 500mAh for just 9g and 2.8mm more, and the only option between 4.8mm and 9.6mm depth in this footprint. At 110A peak, 51A continuous, and 3.15Wh in 26g, it delivers everything the 500mAh cannot at the minimum physical cost the format allows.

Series: Ultra | Chemistry: 3.7V Ternary | Construction: Ceramic separator / PVDF electrode | Form Factor: Soft Pack / Pouch Cell